JPH01148103U - - Google Patents
Info
- Publication number
- JPH01148103U JPH01148103U JP4422788U JP4422788U JPH01148103U JP H01148103 U JPH01148103 U JP H01148103U JP 4422788 U JP4422788 U JP 4422788U JP 4422788 U JP4422788 U JP 4422788U JP H01148103 U JPH01148103 U JP H01148103U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pressure
- passage
- side passage
- operates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002265 prevention Effects 0.000 claims 2
- 230000035939 shock Effects 0.000 claims 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は、本考案の実施例の回路図。第２図は
本考案と従来技術のバイパス通路の流過特性線図
。第３図は従来技術の回路図。
２，２ａ……アクチユエータ、３，３ａ……方
向切換弁、４……カウンタバランスバルブ、５…
…低圧リリーフ弁、６……絞り、１１……供給側
通路、１２……排出側通路、１３……バイパス通
路。
FIG. 1 is a circuit diagram of an embodiment of the present invention. FIG. 2 is a flow characteristic diagram of the bypass passage of the present invention and the prior art. FIG. 3 is a circuit diagram of the prior art. 2, 2a... Actuator, 3, 3a... Directional switching valve, 4... Counter balance valve, 5...
...Low pressure relief valve, 6... Throttle, 11... Supply side passage, 12... Discharge side passage, 13... Bypass passage.
Claims (1)
をそれに加わる荷重と同一方向へ駆動させる回路
の排出側通路に、前記方向切換弁からアクチユエ
ータへの供給側通路の圧力が一定値に達すると作
動するカウンタバランスバルブを設け、前記供給
側通路から分岐させタンクに接続する通路にその
セツト圧を前記カウンタバランスバルブを作動さ
せるパイロツト圧よりもやや高めとした低圧リリ
ーフ弁を設けた、シヨツク防止回路において、 前記低圧リリーフ弁の上流側又は下流側に絞り
を設けた構成としたことを特長とするシヨツク防
止回路。[Claims for Utility Model Registration] A pressure in a supply side passage from the directional control valve to the actuator is constant in the discharge side passage of a circuit that drives a hydraulic actuator in the same direction as the load applied thereto by operating the directional control valve. A counterbalance valve is provided that operates when the above-described value is reached, and a low-pressure relief valve is provided in a passage branching from the supply side passage and connecting to the tank, whose set pressure is slightly higher than the pilot pressure that operates the counterbalance valve. , a shock prevention circuit characterized in that the shock prevention circuit is configured such that a throttle is provided on the upstream side or the downstream side of the low pressure relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4422788U JPH01148103U (en) | 1988-03-31 | 1988-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4422788U JPH01148103U (en) | 1988-03-31 | 1988-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01148103U true JPH01148103U (en) | 1989-10-13 |
Family
ID=31270595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4422788U Pending JPH01148103U (en) | 1988-03-31 | 1988-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01148103U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5467861A (en) * | 1977-11-09 | 1979-05-31 | Kawasaki Heavy Ind Ltd | Oil pressure controller |
| JPS581806B2 (en) * | 1978-10-25 | 1983-01-13 | 三菱重工業株式会社 | Separation control device for triaxial vibration table |
-
1988
- 1988-03-31 JP JP4422788U patent/JPH01148103U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5467861A (en) * | 1977-11-09 | 1979-05-31 | Kawasaki Heavy Ind Ltd | Oil pressure controller |
| JPS581806B2 (en) * | 1978-10-25 | 1983-01-13 | 三菱重工業株式会社 | Separation control device for triaxial vibration table |
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